Tool for detaching obstructions from electric-wire conduits.



M. BLUMENTHAL.

TOOL FUR DETACHING OBSTRUCTIONS FROM ELECTRIC WIRE CONDUlTS.

APPLICATION FILED MAR.10. 1915. 1,1 60,

PatentedrNov. 16, 1915.

CULUMBIA PLANDGRAPH co..w^smNa1oN, n, c.

ririrrnn srarns rarnnr erraten MAURioE BLUMENTHL, or BROOKLYN, New Yoeri.

TOL FOR DETACI-IING- BSTRUCTIONS FROM ELECTRIC-WIRE CONDITS.

To all whom it may com-'em .f

Be it known that I, MAURICE BLUMEN- THAL, a citizen of the United States, and residing at Brooklyn, in the county of Kings and State of New York, have invented cer.- tain new and useful-Improvements in Tools for Detaching Obstructions from Electric- VVire Conduits, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to tools or imple ments for detaching obstructions from the interior of electric wire conduits usedv for telegraph, telephone and other purposes, and which are usually employed in connec-V tion with what are known as jar rods which are usually composed of'detaehably connected parts so that the` length thereof may be increased or decreased, as desired, said rods being adapted to be detachably connected with the toolor implement; and the object of the invention is to provide an improved tool or implement of this class which is effective in operation and which may be used either in conduits which are tubular or conduits which are rectangular in cross section and in either what are called single or multiple conduits; and with this and other objects in view the invention consists in a device of the class specified, constructed as hereinafter described claimed.

r)The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Figure l is a sectional side view of one form of my improved tool or implement; Fig. Q a view similar to Fig. 1 but showing a modification; Fig. 8 a cross section on the line 8 3 of Fig. l; Fig. 4 a view similar to Fig. l but showing another form of my improvement; and, Fig. 5 a cross section on the line 5 5 of Fig. 4.

ln the practice of my invention, reference being made to Figs. l and 3, l provide a tool of the class specified which is tubular in form and circular in cross section, and which comprises a body portion a open at one end and closed at the other, and the closed end a2 is preferably tapered as shown at a3 and provided with a shank at which is rectangular in cross section and preferably i Specification of Letters Patent.

and

Patented Nov-i6, i915.

Application led March 10, 191'5. Serial No. 13,494.

square, and the outer end of the shank a4 is provided with a cylindrical head a5 by means of which the toolmay be connected with a jar rod as in other devices of this class.

The open end ofthe to-ol is provided with projecting teeth a which are preferably curved outwardly, and the closed end portion of the tool is provided, in the form of construction shown, with a transverse partition al having a central perforation as, and

the partition (t7 forms in the closed end of the .tool a chamber of), and in the top wall of saidchamber isA an aperture alo adapted to be closed by a screw plug a or any other suitable means.'` y y ln the laying of conduits of .the class specified it is customaryjto abutthe separate sections of the conduit and to inclose the abutting ends of said sectionswith concrete or similar material, and this concrete while in a plaster state works into the conduit between tlie abutting-ends of said sections `and forms, when set or hard, obstructions which prevent the passage of wires or cables through the conduit, and it is-these obstructions that my improved tool or implement is designed to remove and by making the said tool or implement hollow or tubular in form, the obstructions when detached may to a large extent be collected in the tool, in the operation thereof, and withdrawn from the conduit with the tool, and in the use of this device the chamber a is lilled with water, or partially filled, and this water passes slowly through the aperture as in the partition al in the use of the tool and facilitates the detachment of the obstructions.

In Fig. 2 I have shown a modification of the construction shown in Fig. l in which the open end of the body of the tool is provided with tubular sleeves Z) secured therein in any way, and which are provided at their outer ends with teeth b2 similar to the teeth a6, and the teeth of the inner sleeve alternate with those of the outer sleeve which in turn alternate with the teeth as of the body of the tool. rlhe operation of this form of tool will be the same as that shown in Fig. 1 but the sleeves ZJ form a supplemental chamber b3 in the body of the tool which, in the operation thereof, receives the detached obstructions or a portion thereof, and said obstructions are removed with the tool from the conduit.

ln Figs. 4 and 5, the body o of the tool is rectangular in form and preferably square,

and with this exceptionV the construction is the same as that shown in Fig. 1, and this form of the tool may also ibe providedY With the sleevesY b, if desired, and the operation of this form ofconstruction Will be the same as the operation of the form shown in Figs. l to 3 inclusive.

I-Iaving fully described /my invention, what I claim as new and desire to secure by Letters Patent, is

l. A tool for use in cleaning vout electric cable conduits, said tool comprising an oblong hollow body portion, the side Walls of Which are entirely closed, and said tool being open at `one end and closed at the other, and the open end being provided with peripheral projecting teeth. c

2. A conduitcleaning tool ofthe class `describedfsaid tool lcomprising an `roblong hollow body portion, the Walls of which are parallel, the side walls of said body portion being entirely closed, and said tool being open at'one end and closed at the other, 'and the open end being provided With periph- Veral'projecting teeth, Vand said body portion being also provided adjacent to the closed end With Aa 'transverse partition having Ya small aperture and forming a Water chamber one side Wall vof Which is provided With an orifice through which :said chamber may be filled, and means for closing said orifice.

3. A conduit'cle'aning tool Yof the class de,-

scribed, comprising an oblong box-shaped body portion open at one end and closed at the other, the closed end being'provided with means for attaching a jar rod thereto and the open end being provided with supplemental inner sleeves which are secured therein, and said open end of the body portion and said sleeves being provided with projecting teeth.

4. A conduit cleaning tool of the class described, comprising an oblong box-shaped body portion open at one end and closed at the other, the closed end being provided with means for attaching a jar rod thereto and the open end being provided with supplemental inner 4sleeves which are secured therein, and said open end of the body portion and said sleeve being provided with projecting teeth, and said body portion being provided adjacent to the closed end thereof with a transverse 4partition forming in said 'end a Water chamber and having a small aperture.

In testimony that I claim the foregoing as my invention I have signed my name in presence ofthe subscribing Witnesses this 8th day of March 1915.

MAURICE BLUMENTHAL.

Witnesses:

C. MULREANY, H. E. THOMPSON.

' copies bf 'this 'gereift 'may te obtainedfor 'five 'cents each, by addressing the commissioner of Patents,

Washington, D. G. 

